Centrifugal machine.



PATENTED FEB. 4, 1908."

LL FUCHS. GENTR'IFUGAL MACHINE. APPLICATION FILED FEB. 3, 190B.-

2 SHEETS-SHEET 1.

No. 977,991. PATENTBD FEB. 4, 1908.

L. FUCHS. v

v GENTRIFUGALMAOHINE.

APPLIOATIOL-I FILED 13113.3, 1906 2 SHEETS-SHEET 2.

PATENT, OFFICE.

unwre FUCHS, OF ROHRBAGH, AUSTRIATHUNGABYL CENTRIFUGAI; MACHINE.

' To'all whom it may concern:

Be it known that I, LUDWIG FUCHS, subject of the Emperor of Austria-Hungary, residing at Rohrbach, in the Province of Moravia,

5 Empire of Austria-Hungary, have invented certain new and useful Im rovements in Centrifugal Machines, of whic the following is a specification.

,This invention relates to improvements in centrifugal machine of the kind in which by lowering a lever the bottom of the centrifugal drum can be disengaged from the hook-shaped parts fitted. on the spindle of the drum, wherey the bottom can be lowered so that the 5 goods treated in the machine, for instance the fill-mass-or the crystallized-sugaremass freed from syrup, can be discharged from the machine without stopping the drum. On the other hand the bottom of the drum can 0 be raised during the fillin of the same and thus produce the closing oi the drum, and for this purpose it is only necessary to tread upon a foot leverconnected with the, bottom of the drum by means of a lever and a rod.

Now the improvements which form the isuhiect matter of the present invention consist in that theraisin of the movable bot- 'tom of the centrifugal drumis effected in stead of. by a lever mechanism by the resby the construction of the machine is c onsiderably simplified and-the working of the same is rendered more'reliable.

. In the centrifugal machine of the old construction ,hook 's 'aped parts are used for maintaining the bottomqof the drum in its I raised osition; On account of the wearing outof t ese hook-shaped arts the reliability of the workin of the whole machine becomes impaired. The application of water or gas pressure or of a vacuum, according to the present invention, for raising'the,bottom of the centrifugal drum affords the possibilityto dispense' entirely. with the said hookshaped -parts.-. Moreover,- since the improved machine does not comprise any rigid, immovable bearin s, the spindle being mountedloosely,.it wor s with aperfectly quiet motion and, besides,.'& strong foundation in masonry, which is absolutely indispensable for theold machine of this kind, to absorb-the concussions", is unnecessary for the new machine. Whereas'the old centrif- ,ugah'a aratus can bemounted only on the groun cor, the improved machine can be Specification of Letters Patent, Application filed I'ebruary ii, 1906- Seria1No,-299.243.

sure of a liquid or of a gaseous a ent, w eregroov Patent ed Feb. 4, 1908.

sus ended between two girders of a floor or bu' ding. I

The accompanyingdrawings represent the improved centrifugal machine 'in section Figure 1 showing the suitable arrangement of the machine when the pressure of a liquid medium is employed. whereas in Fig. 2 the machine is shown when gas pressure is employed} The raised position of the bottom of the centrifugal drum is shown in Fig.

1 in dotted lines; in'Fig. 2 only those parts of the machine which refer to the invention are shown. in section, all other parts being represented in sideeleva'tion;

On the spindle a of the centrifugal machine .shown in Fig.1 is arranged a beltpulley 1 which serves for the reception of the plunge piston c. When. the machine is worked by electricity the plunger piston is arranged within the collector. The plunger piston-is raised by pressure-water led-from an elevated reservoir and flowing througha pipe d into the hollow spindle a and thence throu h'a transverse channel 6 of the latter into t e hollow recess made in the pulley b.

The plunger is closed water-tight against the spindle and against the interior wall of the pulley by means of the leather collars f and f respectively. In the upper end of the plunger .is screwed a sleeve 9 which encompasses the spindle and passes through. the

bolster h ofthe same. On the upper end of the sleeve is screwed a ring '0' which acts upon the movable bottom 7' and upon the ring r fixed on four arms and raises the same as soon as pressure Water'is being admitted.

Upon the hub portion of the beltulley b is arranged a leatherring k which, as for its purpose to weaken the impact of the upon the ub which takes place w en the longer bottom of the drum is falling downwards.

The guiding of the spindle is effected by and feather Z. This guiding device as-we as the upper bolster h of the spindle are lubricated by means of a consistent lubricating material fed from a lubricating cup'm throu h. the hollow spindle, whereas the upper ball-bearing 2, receives its lubri 1 eating material from an oil cup 11,. The emplo ment of ressure water has moreover the ad itional at vantage of permanently maintaining the lower part'of the spindle in a cool condition and thus obviating any possibility of the wearing ofi of the step bearing.

In order to close the. centrifugal drum 'i 61 1 15". n egsszirjf tc open the three walycoek end to admit 'pi'essiiregwater flew; spindle if n6wthej cock i t i d into mess of eyy'stallized i. nec'esszn y. v These modific etioi s 'refe'fprincipa'lly to the particular arrangement ofthe plunger and of thehpa ts St lton riding the;- same and fui-ther in "the eiran'geinent of -a' shape jig of "luhgere nd dftlie hettomfof thf centrifuge druni 'islefieoted by'the' 'artihos'-.f pliei'ie "ptess u're. In this modified 'ar ng mam of ph msemnei tenulle b i to eonsti'tute the easing] off thei- ;phinge anjd the latter bears against the hub a t1ghl1,Cl0S11Ie; the bottbm 'Qf' -the c'aSiii I I 1 751 that when a vaouuin has heeii established inl Y the yint'erier of tl e-plun'gerlthe outer atm'oswhas several," for; instance four zipertufes pherie air will pre'ss @011; the bottom-Yet the plunger at 1 end will miseth'esame. l n this A galley b; afstufiing'jbox z being 'in-j etween the said, parts for as'suri whichth I'piston w'meetsduring itsascenclhydrauliobrake is"-pr ovi i ed for deadening the force of theim act.;,,.fl f

Icleim: "Q 1., Inv a centrifugal inechine the combine- "tl'OIi with e'dr um hafvin ef'moi ezbl-e bottoiri edaptecl' to he idis e'nvaged' therefrdiiy of a,

M p act when the bottom (f-theoentrifugsl drum-is efng'miSed y t I hand of F '2 sh'gwsthe at-f, rangeinent of the iilaehiiie when gases or v11; .l -;-s under press'uie are employuhwhereas Efithe right -hand""sirle "of,this figure represents the arrangement adapted for woIr lqi iig witlihollow retatable;spiii lle earryimfisaid (lIIi'lTIl,' a. pulley'seeured to said spindle, e' -hollow;

- plunger agrahged-i in said' pulley and eenneeted with the movhhle bottom of the ii-um end means to sdmit a'nd with lr z'iw fluiLL- und'ei-piessuie to and from 'thea'saidplhnger I I I epl ungm' piston isvin this'arranghmenti provided at its 'bottoinwith a tensio i spring 1pguidedjonthe lunger-guiding sleeve q suitablyi'olonged downwards; In the top 'en ofthe pliinger isi'serewecl thefsleevebj th' t is ai'oting upQ n the bottom *of thezeentrifu aldl'il'm and is medetoslide upo the? v "spin ed. (Q11 this'sleeveg is erna/ng c l the "casing tfofia', hydra 1 lie brake pioyid'ed with stiiiiing boxes s s-,' the bottom flange 't of 3 5 this' 'casigigkbeing rigidly eoiinected with the top flange of the guiding sleeve 51 sonewed onto the'plunger casing 1)., The brake easing. t4is provided on each side with "a pressure .i 2.- Ine, eentrifugal 'machine theehinbinatidaptedter begglisenga ge'difrom said dium, (if a hollow rotiitable spindle carrying;said

he'llo'vy ungerferrehged insaid'pulleygfa sleeve securedato thessa idfplunger and sur rounding the-1 said hollowspiiidle; "a ring} re ulating pI'pe .u with stopioek endhie' screwed. to the u per end'f'lof s'aid" 'SI WQ :40 light this easing has an opening wh ch ean" adaptedito act on t e' movahle1-bottoin ofthe/165 bdclosedbya shrew. w. Within the 'calsing' t is a'rrahged a sliding piston az; rigidly eoniiiect'ed with the sleeve g: efDhTe eesingt is filled with glycerin thre igh the \opening in;

drum and: means, to admithnd withdraw fluid undeiipressure to and. from. the hollow 7 lunger res ectively,';to;reise and lower the} "shine toget er with the movable, bottom of thedruniat will 1 i l-3-. -ln"a; centrifu it mqchine the combine .t'ionwith e drain, lihving a movable bottom adapted tobe disengaged from seidiiruhi, of

,a hollow retatalble spindle carrying said I 'i'drum; a piil ey' secureclto the said spindle, a 115 hollow plpnger arranged in said pulley, 'aieon "nction between ,--,the: said plunger and the said inovaiole"bhttom, means to admitfiu'id. under pressure. to'thesaidplliligei through 4 lthe'seid' hollow s I I pl mger and hovablej' bottom} connected therewith, and peeking irin I between the v screwe'd-.-a I i When in consequence of'the admission of the pressure agent through-the hollow spindle a the plun ,er pistonsZandjtogethen with the same the s eeve g/willj be raised; the piston 00 will also heieised. and will force the glxceri i "throughtilQPhfiilfio the lower parto'f the casingft. In eons ueneLQf the resista C in gimotion the bottoin of the Centrifugal r drum is pressed slowly and ggadually againsti the drum and'fo r'the same reason the own ,ward movement fQthe bOttOm will; hex sai gllunger and the said u ley on one Side 5 gradual i t an" t eho'll'ows' indie ont e other side; The right hand side of'Fig. 2 shows thexsir- 4.v In av centrilii el machine? the oom'binarangem'e'nt ofthe machine; when it is worked by vacuum ci'eetedin the-hollow spindle and in the hollow of the plunger piston that is I connected; withgthe spindle by means-'ofthe T channel-e, or in other words; when the I' 'eisf.

tion with admin, avin' a movable bottom ada ted tofb'e disenge e therefrom,'of agrotata le hollow" spindFe e pulley atteohed theret0,,a hollow plliiigericonnecte'd-with the modified e rai'igement (if the inaehine' also}; go

I res ective y'pto reisehnd 'lo wer thgseme to-' I i ,get 1 er with therhoimbleh0tto1rrl of the d um l I I A L I tionwitlrjaidruin hai ing e nov eblehottbin druinyefiulley's'eeiiied to the said'sphid le, a 160 indle so as to raise'the said y said movable bottoinqand arranged the I adapted to be raised and lowered towards and away from the drum, of'a rotatable hol pulley, means to admit fluid. under ressure through the hollow s indle to t e said plunger, and a hydra ic piston connected with the said plunger actingas a brake for the movements of said plunger. Y a

5. In a centrifu a1 machine the combination with a drum, iaving a movable bottom low spindle, carryin the said drain, a pulley secured to the said ollow spindle, a hollowplunger, arranged in said pulley, a sleeve connecting the said plunger with the said movable bottom, a hydraulic piston carried by the said sleeve to act-as .a brake on-fthe novements of the said plunier and bottom, ind a casing surrounding t e said plunger LDd guiding the same, i

6. In a centrifu al machine the combinar .ion with a drum, l aving a movable bottom idapted to be raised towards and away from aid drum, of a rotatable hollow s indle, a

pulley closed at its lowerend an secured 0 the said p hollowplunger, a sleeve Pnnecting Said plungerand said movabl said hollow lunger, and small apertures provided in t e closed lower end of the said pulley, to admit atmospheric pressure under the said plunger.

7. 'In'a centrifu a1 machine the combination witha drum, aving a movable bottom ada ted to be raised towards and away from sai' drum, of a rotatable hollow spindle, a pulleyc closed at its lower end secured to the saidspindle, a hollow plunger, a sleeve connesting said fplunger and said movable bottom, means or-producing a vacuum in said hollow ptungergi and small apertures provided in -the closed lower end of the said pulley, to admit atmospheric pressure under the said plunger and a hydraulic piston sep'lunger and movable bottom to retard the movements of the'said last named parts.

In testimony whereof I have hereunto set nesses.

' LUDWIG FUCHS. *Witnesses JosEF RUBAsons,

iottom, means for producing a vacuum in ALVESTO S. Hooun.

cared to the sleeve connecting the said my hand in presence of twosubscribing wit- 

